subject:"lo\(4\) loopback LRO and TSO"

Re: lo(4) loopback LRO and TSO

2023-07-02 Thread Jan Klemkow




On July 2, 2023 2:33:41 PM GMT+02:00, Claudio Jeker  
wrote:
>On Sun, Jul 02, 2023 at 02:28:17PM +0200, Alexander Bluhm wrote:
>> anyone?
>
>Was not able to test yet but I like the diff.
>Right now this is a noop since LRO is not on by default for lo(4).
>Because of that OK claudio@

The diff works fine in my sparc64 setup.
ok jan@

>> On Fri, Jun 23, 2023 at 06:06:16PM +0200, Alexander Bluhm wrote:
>> > Hi,
>> > 
>> > Claudio@ mentioned the idea to use TSO and LRO on the loopback
>> > interface to transfer TCP faster.
>> > 
>> > I see a performance effect with this diff, but more importantly it
>> > gives us more test coverage.  Currently LRO on lo(4) is default
>> > off.
>> > 
>> > Future plan is:
>> > - Fix some corner cases for LRO/TSO with TCP path-MTU discovery
>> >   and IP forwarding when LRO is enabled.
>> > - Enable LRO/TSO for lo(4) and ix(4) per default.
>> > - Jan@ commits his ixl(4) TSO diff.
>> > 
>> > ok for lo(4) LRO/TSO with default off?
>> > 
>> > bluhm
>> > 
>> > Index: sys/net/if.c
>> > ===
>> > RCS file: /data/mirror/openbsd/cvs/src/sys/net/if.c,v
>> > retrieving revision 1.700
>> > diff -u -p -r1.700 if.c
>> > --- sys/net/if.c   12 Jun 2023 21:19:54 -  1.700
>> > +++ sys/net/if.c   23 Jun 2023 15:48:27 -
>> > @@ -106,6 +106,9 @@
>> >  #ifdef MROUTING
>> >  #include 
>> >  #endif
>> > +#include 
>> > +#include 
>> > +#include 
>> >  
>> >  #ifdef INET6
>> >  #include 
>> > @@ -802,12 +805,29 @@ if_input_local(struct ifnet *ifp, struct
>> > * is now incorrect, will be calculated before sending.
>> > */
>> >keepcksum = m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT |
>> > -  M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT);
>> > +  M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT |
>> > +  M_TCP_TSO);
>> >m_resethdr(m);
>> >m->m_flags |= M_LOOP | keepflags;
>> >m->m_pkthdr.csum_flags = keepcksum;
>> >m->m_pkthdr.ph_ifidx = ifp->if_index;
>> >m->m_pkthdr.ph_rtableid = ifp->if_rdomain;
>> > +
>> > +  if (ISSET(keepcksum, M_TCP_TSO) && m->m_pkthdr.len > ifp->if_mtu) {
>> > +  if (ifp->if_mtu > 0 &&
>> > +  ((af == AF_INET &&
>> > +  ISSET(ifp->if_capabilities, IFCAP_TSOv4)) ||
>> > +  (af == AF_INET6 &&
>> > +  ISSET(ifp->if_capabilities, IFCAP_TSOv6 {
>> > +  tcpstat_inc(tcps_inswlro);
>> > +  tcpstat_add(tcps_inpktlro,
>> > +  (m->m_pkthdr.len + ifp->if_mtu - 1) / ifp->if_mtu);
>> > +  } else {
>> > +  tcpstat_inc(tcps_inbadlro);
>> > +  m_freem(m);
>> > +  return (EPROTONOSUPPORT);
>> > +  }
>> > +  }
>> >  
>> >if (ISSET(keepcksum, M_TCP_CSUM_OUT))
>> >m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
>> > Index: sys/net/if_loop.c
>> > ===
>> > RCS file: /data/mirror/openbsd/cvs/src/sys/net/if_loop.c,v
>> > retrieving revision 1.94
>> > diff -u -p -r1.94 if_loop.c
>> > --- sys/net/if_loop.c  5 Jun 2023 11:35:46 -   1.94
>> > +++ sys/net/if_loop.c  23 Jun 2023 15:48:27 -
>> > @@ -175,7 +175,8 @@ loop_clone_create(struct if_clone *ifc, 
>> >ifp->if_xflags = IFXF_CLONED;
>> >ifp->if_capabilities = IFCAP_CSUM_IPv4 |
>> >IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4 |
>> > -  IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6;
>> > +  IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6 |
>> > +  IFCAP_LRO;
>> >ifp->if_rtrequest = lortrequest;
>> >ifp->if_ioctl = loioctl;
>> >ifp->if_input = loinput;
>> > @@ -281,6 +282,10 @@ loioctl(struct ifnet *ifp, u_long cmd, c
>> >  
>> >switch (cmd) {
>> >case SIOCSIFFLAGS:
>> > +  if (ISSET(ifp->if_xflags, IFXF_LRO))
>> > +  SET(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
>> > +  else
>> > +  CLR(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
>> >break;
>> >  
>> >case SIOCSIFADDR:
>> > Index: sys/netinet/tcp_usrreq.c
>> > ===
>> > RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_usrreq.c,v
>> > retrieving revision 1.219
>> > diff -u -p -r1.219 tcp_usrreq.c
>> > --- sys/netinet/tcp_usrreq.c   23 May 2023 09:16:16 -  1.219
>> > +++ sys/netinet/tcp_usrreq.c   23 Jun 2023 15:48:27 -
>> > @@ -1340,6 +1340,7 @@ tcp_sysctl_tcpstat(void *oldp, size_t *o
>> >ASSIGN(tcps_outhwtso);
>> >ASSIGN(tcps_outpkttso);
>> >ASSIGN(tcps_outbadtso);
>> > +  ASSIGN(tcps_inswlro);
>> >ASSIGN(tcps_inhwlro);
>> >ASSIGN(tcps_inpktlro);
>> >ASSIGN(tcps_inbadlro);
>> > Index: sys/netinet/tcp_var.h
>> > ===
>> > RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_var.h,v
>> > retrieving revision 1.167
>> > diff -u -p -r1.167 tcp_var.h
>> >

Re: lo(4) loopback LRO and TSO

2023-07-02 Thread Claudio Jeker

On Sun, Jul 02, 2023 at 02:28:17PM +0200, Alexander Bluhm wrote:
> anyone?

Was not able to test yet but I like the diff.
Right now this is a noop since LRO is not on by default for lo(4).
Because of that OK claudio@
 
> On Fri, Jun 23, 2023 at 06:06:16PM +0200, Alexander Bluhm wrote:
> > Hi,
> > 
> > Claudio@ mentioned the idea to use TSO and LRO on the loopback
> > interface to transfer TCP faster.
> > 
> > I see a performance effect with this diff, but more importantly it
> > gives us more test coverage.  Currently LRO on lo(4) is default
> > off.
> > 
> > Future plan is:
> > - Fix some corner cases for LRO/TSO with TCP path-MTU discovery
> >   and IP forwarding when LRO is enabled.
> > - Enable LRO/TSO for lo(4) and ix(4) per default.
> > - Jan@ commits his ixl(4) TSO diff.
> > 
> > ok for lo(4) LRO/TSO with default off?
> > 
> > bluhm
> > 
> > Index: sys/net/if.c
> > ===
> > RCS file: /data/mirror/openbsd/cvs/src/sys/net/if.c,v
> > retrieving revision 1.700
> > diff -u -p -r1.700 if.c
> > --- sys/net/if.c12 Jun 2023 21:19:54 -  1.700
> > +++ sys/net/if.c23 Jun 2023 15:48:27 -
> > @@ -106,6 +106,9 @@
> >  #ifdef MROUTING
> >  #include 
> >  #endif
> > +#include 
> > +#include 
> > +#include 
> >  
> >  #ifdef INET6
> >  #include 
> > @@ -802,12 +805,29 @@ if_input_local(struct ifnet *ifp, struct
> >  * is now incorrect, will be calculated before sending.
> >  */
> > keepcksum = m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT |
> > -   M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT);
> > +   M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT |
> > +   M_TCP_TSO);
> > m_resethdr(m);
> > m->m_flags |= M_LOOP | keepflags;
> > m->m_pkthdr.csum_flags = keepcksum;
> > m->m_pkthdr.ph_ifidx = ifp->if_index;
> > m->m_pkthdr.ph_rtableid = ifp->if_rdomain;
> > +
> > +   if (ISSET(keepcksum, M_TCP_TSO) && m->m_pkthdr.len > ifp->if_mtu) {
> > +   if (ifp->if_mtu > 0 &&
> > +   ((af == AF_INET &&
> > +   ISSET(ifp->if_capabilities, IFCAP_TSOv4)) ||
> > +   (af == AF_INET6 &&
> > +   ISSET(ifp->if_capabilities, IFCAP_TSOv6 {
> > +   tcpstat_inc(tcps_inswlro);
> > +   tcpstat_add(tcps_inpktlro,
> > +   (m->m_pkthdr.len + ifp->if_mtu - 1) / ifp->if_mtu);
> > +   } else {
> > +   tcpstat_inc(tcps_inbadlro);
> > +   m_freem(m);
> > +   return (EPROTONOSUPPORT);
> > +   }
> > +   }
> >  
> > if (ISSET(keepcksum, M_TCP_CSUM_OUT))
> > m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
> > Index: sys/net/if_loop.c
> > ===
> > RCS file: /data/mirror/openbsd/cvs/src/sys/net/if_loop.c,v
> > retrieving revision 1.94
> > diff -u -p -r1.94 if_loop.c
> > --- sys/net/if_loop.c   5 Jun 2023 11:35:46 -   1.94
> > +++ sys/net/if_loop.c   23 Jun 2023 15:48:27 -
> > @@ -175,7 +175,8 @@ loop_clone_create(struct if_clone *ifc, 
> > ifp->if_xflags = IFXF_CLONED;
> > ifp->if_capabilities = IFCAP_CSUM_IPv4 |
> > IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4 |
> > -   IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6;
> > +   IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6 |
> > +   IFCAP_LRO;
> > ifp->if_rtrequest = lortrequest;
> > ifp->if_ioctl = loioctl;
> > ifp->if_input = loinput;
> > @@ -281,6 +282,10 @@ loioctl(struct ifnet *ifp, u_long cmd, c
> >  
> > switch (cmd) {
> > case SIOCSIFFLAGS:
> > +   if (ISSET(ifp->if_xflags, IFXF_LRO))
> > +   SET(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
> > +   else
> > +   CLR(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
> > break;
> >  
> > case SIOCSIFADDR:
> > Index: sys/netinet/tcp_usrreq.c
> > ===
> > RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_usrreq.c,v
> > retrieving revision 1.219
> > diff -u -p -r1.219 tcp_usrreq.c
> > --- sys/netinet/tcp_usrreq.c23 May 2023 09:16:16 -  1.219
> > +++ sys/netinet/tcp_usrreq.c23 Jun 2023 15:48:27 -
> > @@ -1340,6 +1340,7 @@ tcp_sysctl_tcpstat(void *oldp, size_t *o
> > ASSIGN(tcps_outhwtso);
> > ASSIGN(tcps_outpkttso);
> > ASSIGN(tcps_outbadtso);
> > +   ASSIGN(tcps_inswlro);
> > ASSIGN(tcps_inhwlro);
> > ASSIGN(tcps_inpktlro);
> > ASSIGN(tcps_inbadlro);
> > Index: sys/netinet/tcp_var.h
> > ===
> > RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_var.h,v
> > retrieving revision 1.167
> > diff -u -p -r1.167 tcp_var.h
> > --- sys/netinet/tcp_var.h   23 May 2023 09:16:16 -  1.167
> > +++ sys/netinet/tcp_var.h   23 Jun 2023 15:48:27 -
> > @@ -447,6 +447,7 @@ struct  tcpstat {
> >

Re: lo(4) loopback LRO and TSO

2023-07-02 Thread Alexander Bluhm

anyone?

On Fri, Jun 23, 2023 at 06:06:16PM +0200, Alexander Bluhm wrote:
> Hi,
> 
> Claudio@ mentioned the idea to use TSO and LRO on the loopback
> interface to transfer TCP faster.
> 
> I see a performance effect with this diff, but more importantly it
> gives us more test coverage.  Currently LRO on lo(4) is default
> off.
> 
> Future plan is:
> - Fix some corner cases for LRO/TSO with TCP path-MTU discovery
>   and IP forwarding when LRO is enabled.
> - Enable LRO/TSO for lo(4) and ix(4) per default.
> - Jan@ commits his ixl(4) TSO diff.
> 
> ok for lo(4) LRO/TSO with default off?
> 
> bluhm
> 
> Index: sys/net/if.c
> ===
> RCS file: /data/mirror/openbsd/cvs/src/sys/net/if.c,v
> retrieving revision 1.700
> diff -u -p -r1.700 if.c
> --- sys/net/if.c  12 Jun 2023 21:19:54 -  1.700
> +++ sys/net/if.c  23 Jun 2023 15:48:27 -
> @@ -106,6 +106,9 @@
>  #ifdef MROUTING
>  #include 
>  #endif
> +#include 
> +#include 
> +#include 
>  
>  #ifdef INET6
>  #include 
> @@ -802,12 +805,29 @@ if_input_local(struct ifnet *ifp, struct
>* is now incorrect, will be calculated before sending.
>*/
>   keepcksum = m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT |
> - M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT);
> + M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT |
> + M_TCP_TSO);
>   m_resethdr(m);
>   m->m_flags |= M_LOOP | keepflags;
>   m->m_pkthdr.csum_flags = keepcksum;
>   m->m_pkthdr.ph_ifidx = ifp->if_index;
>   m->m_pkthdr.ph_rtableid = ifp->if_rdomain;
> +
> + if (ISSET(keepcksum, M_TCP_TSO) && m->m_pkthdr.len > ifp->if_mtu) {
> + if (ifp->if_mtu > 0 &&
> + ((af == AF_INET &&
> + ISSET(ifp->if_capabilities, IFCAP_TSOv4)) ||
> + (af == AF_INET6 &&
> + ISSET(ifp->if_capabilities, IFCAP_TSOv6 {
> + tcpstat_inc(tcps_inswlro);
> + tcpstat_add(tcps_inpktlro,
> + (m->m_pkthdr.len + ifp->if_mtu - 1) / ifp->if_mtu);
> + } else {
> + tcpstat_inc(tcps_inbadlro);
> + m_freem(m);
> + return (EPROTONOSUPPORT);
> + }
> + }
>  
>   if (ISSET(keepcksum, M_TCP_CSUM_OUT))
>   m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
> Index: sys/net/if_loop.c
> ===
> RCS file: /data/mirror/openbsd/cvs/src/sys/net/if_loop.c,v
> retrieving revision 1.94
> diff -u -p -r1.94 if_loop.c
> --- sys/net/if_loop.c 5 Jun 2023 11:35:46 -   1.94
> +++ sys/net/if_loop.c 23 Jun 2023 15:48:27 -
> @@ -175,7 +175,8 @@ loop_clone_create(struct if_clone *ifc, 
>   ifp->if_xflags = IFXF_CLONED;
>   ifp->if_capabilities = IFCAP_CSUM_IPv4 |
>   IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4 |
> - IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6;
> + IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6 |
> + IFCAP_LRO;
>   ifp->if_rtrequest = lortrequest;
>   ifp->if_ioctl = loioctl;
>   ifp->if_input = loinput;
> @@ -281,6 +282,10 @@ loioctl(struct ifnet *ifp, u_long cmd, c
>  
>   switch (cmd) {
>   case SIOCSIFFLAGS:
> + if (ISSET(ifp->if_xflags, IFXF_LRO))
> + SET(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
> + else
> + CLR(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
>   break;
>  
>   case SIOCSIFADDR:
> Index: sys/netinet/tcp_usrreq.c
> ===
> RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_usrreq.c,v
> retrieving revision 1.219
> diff -u -p -r1.219 tcp_usrreq.c
> --- sys/netinet/tcp_usrreq.c  23 May 2023 09:16:16 -  1.219
> +++ sys/netinet/tcp_usrreq.c  23 Jun 2023 15:48:27 -
> @@ -1340,6 +1340,7 @@ tcp_sysctl_tcpstat(void *oldp, size_t *o
>   ASSIGN(tcps_outhwtso);
>   ASSIGN(tcps_outpkttso);
>   ASSIGN(tcps_outbadtso);
> + ASSIGN(tcps_inswlro);
>   ASSIGN(tcps_inhwlro);
>   ASSIGN(tcps_inpktlro);
>   ASSIGN(tcps_inbadlro);
> Index: sys/netinet/tcp_var.h
> ===
> RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_var.h,v
> retrieving revision 1.167
> diff -u -p -r1.167 tcp_var.h
> --- sys/netinet/tcp_var.h 23 May 2023 09:16:16 -  1.167
> +++ sys/netinet/tcp_var.h 23 Jun 2023 15:48:27 -
> @@ -447,6 +447,7 @@ structtcpstat {
>   u_int32_t tcps_outhwtso;/* output tso processed by hardware */
>   u_int32_t tcps_outpkttso;   /* packets generated by tso */
>   u_int32_t tcps_outbadtso;   /* output tso failed, packet dropped */
> + u_int32_t tcps_inswlro; /* input lro on pseudo device */
>   u_int32_t tcps_inhwlro; /* input lro from

lo(4) loopback LRO and TSO

2023-06-23 Thread Alexander Bluhm

Hi,

Claudio@ mentioned the idea to use TSO and LRO on the loopback
interface to transfer TCP faster.

I see a performance effect with this diff, but more importantly it
gives us more test coverage.  Currently LRO on lo(4) is default
off.

Future plan is:
- Fix some corner cases for LRO/TSO with TCP path-MTU discovery
  and IP forwarding when LRO is enabled.
- Enable LRO/TSO for lo(4) and ix(4) per default.
- Jan@ commits his ixl(4) TSO diff.

ok for lo(4) LRO/TSO with default off?

bluhm

Index: sys/net/if.c
===
RCS file: /data/mirror/openbsd/cvs/src/sys/net/if.c,v
retrieving revision 1.700
diff -u -p -r1.700 if.c
--- sys/net/if.c12 Jun 2023 21:19:54 -  1.700
+++ sys/net/if.c23 Jun 2023 15:48:27 -
@@ -106,6 +106,9 @@
 #ifdef MROUTING
 #include 
 #endif
+#include 
+#include 
+#include 
 
 #ifdef INET6
 #include 
@@ -802,12 +805,29 @@ if_input_local(struct ifnet *ifp, struct
 * is now incorrect, will be calculated before sending.
 */
keepcksum = m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT |
-   M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT);
+   M_TCP_CSUM_OUT | M_UDP_CSUM_OUT | M_ICMP_CSUM_OUT |
+   M_TCP_TSO);
m_resethdr(m);
m->m_flags |= M_LOOP | keepflags;
m->m_pkthdr.csum_flags = keepcksum;
m->m_pkthdr.ph_ifidx = ifp->if_index;
m->m_pkthdr.ph_rtableid = ifp->if_rdomain;
+
+   if (ISSET(keepcksum, M_TCP_TSO) && m->m_pkthdr.len > ifp->if_mtu) {
+   if (ifp->if_mtu > 0 &&
+   ((af == AF_INET &&
+   ISSET(ifp->if_capabilities, IFCAP_TSOv4)) ||
+   (af == AF_INET6 &&
+   ISSET(ifp->if_capabilities, IFCAP_TSOv6 {
+   tcpstat_inc(tcps_inswlro);
+   tcpstat_add(tcps_inpktlro,
+   (m->m_pkthdr.len + ifp->if_mtu - 1) / ifp->if_mtu);
+   } else {
+   tcpstat_inc(tcps_inbadlro);
+   m_freem(m);
+   return (EPROTONOSUPPORT);
+   }
+   }
 
if (ISSET(keepcksum, M_TCP_CSUM_OUT))
m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK;
Index: sys/net/if_loop.c
===
RCS file: /data/mirror/openbsd/cvs/src/sys/net/if_loop.c,v
retrieving revision 1.94
diff -u -p -r1.94 if_loop.c
--- sys/net/if_loop.c   5 Jun 2023 11:35:46 -   1.94
+++ sys/net/if_loop.c   23 Jun 2023 15:48:27 -
@@ -175,7 +175,8 @@ loop_clone_create(struct if_clone *ifc, 
ifp->if_xflags = IFXF_CLONED;
ifp->if_capabilities = IFCAP_CSUM_IPv4 |
IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4 |
-   IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6;
+   IFCAP_CSUM_TCPv6 | IFCAP_CSUM_UDPv6 |
+   IFCAP_LRO;
ifp->if_rtrequest = lortrequest;
ifp->if_ioctl = loioctl;
ifp->if_input = loinput;
@@ -281,6 +282,10 @@ loioctl(struct ifnet *ifp, u_long cmd, c
 
switch (cmd) {
case SIOCSIFFLAGS:
+   if (ISSET(ifp->if_xflags, IFXF_LRO))
+   SET(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
+   else
+   CLR(ifp->if_capabilities, IFCAP_TSOv4 | IFCAP_TSOv6);
break;
 
case SIOCSIFADDR:
Index: sys/netinet/tcp_usrreq.c
===
RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_usrreq.c,v
retrieving revision 1.219
diff -u -p -r1.219 tcp_usrreq.c
--- sys/netinet/tcp_usrreq.c23 May 2023 09:16:16 -  1.219
+++ sys/netinet/tcp_usrreq.c23 Jun 2023 15:48:27 -
@@ -1340,6 +1340,7 @@ tcp_sysctl_tcpstat(void *oldp, size_t *o
ASSIGN(tcps_outhwtso);
ASSIGN(tcps_outpkttso);
ASSIGN(tcps_outbadtso);
+   ASSIGN(tcps_inswlro);
ASSIGN(tcps_inhwlro);
ASSIGN(tcps_inpktlro);
ASSIGN(tcps_inbadlro);
Index: sys/netinet/tcp_var.h
===
RCS file: /data/mirror/openbsd/cvs/src/sys/netinet/tcp_var.h,v
retrieving revision 1.167
diff -u -p -r1.167 tcp_var.h
--- sys/netinet/tcp_var.h   23 May 2023 09:16:16 -  1.167
+++ sys/netinet/tcp_var.h   23 Jun 2023 15:48:27 -
@@ -447,6 +447,7 @@ struct  tcpstat {
u_int32_t tcps_outhwtso;/* output tso processed by hardware */
u_int32_t tcps_outpkttso;   /* packets generated by tso */
u_int32_t tcps_outbadtso;   /* output tso failed, packet dropped */
+   u_int32_t tcps_inswlro; /* input lro on pseudo device */
u_int32_t tcps_inhwlro; /* input lro from hardware */
u_int32_t tcps_inpktlro;/* packets coalesced by hardware lro */
u_int32_t tcps_inbadlro;/* input bad lro packets */
@@ -628,6 +629,7 @@ enum

Re: lo(4) loopback LRO and TSO

Re: lo(4) loopback LRO and TSO

Re: lo(4) loopback LRO and TSO

lo(4) loopback LRO and TSO

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